Regensburg 2010 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 10: Poster: Structure and Dynamics of Responsive Hydrogels

CPP 10.7: Poster

Montag, 22. März 2010, 16:30–18:00, Poster C

Thermoresponsive Behaviour of adsorbed P(NIPAM-co-AAc) Microgel Particles — Anna Burmistrova, •Marcel Richter, and Regine von Klitzing — Technische Universität Berlin, Straße des 17. Juni 124, 10623 Berlin, Germany

During the last decades microgels made of N-isopropylacrylamide (NIPAM) have attracted much interest and were studied by several techniques like microscopy and light scattering [1]. These polymer particles show thermoresponsive behaviour and can therefore be classified as *smart* materials. Monodisperse PNIPAM microgels were synthesized by emulsion polymerisation without using surfactants. To receive the pH-sensitive microgels, aclylic acid (AAc) as a co-monomer was used. [2, 3]. The particles were adsorbed on the different substrates (silicon precoated with different polyelectrolytes and gold) [4, 5]. The thermo induced swelling/deswelling behaviour of adsorbed microgels was studied by Atomic Force Microscopy and Quartz Crystal Microbalance methods. The effect of co-monomer content (AAc), effect of pH and effect of ionic strength were investigated.

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